Merge "Reducing chances for the object with finalizer to be reffed by... (ac04c5fd) · Commits · e / os / android_packages_apps_Trebuchet

src/com/android/launcher3/testing/TestInformationHandler.java

+18 −9

Original line number	Diff line number	Diff line
		@@ -24,9 +24,10 @@ import android.graphics.Bitmap;
		import android.graphics.Color;
		import android.os.Bundle;
		import android.os.Debug;
		import android.util.Log;
		import android.view.View;

		import androidx.annotation.Keep;

		import com.android.launcher3.DeviceProfile;
		import com.android.launcher3.InvariantDeviceProfile;
		import com.android.launcher3.Launcher;
		@@ -186,6 +187,22 @@ public class TestInformationHandler implements ResourceBasedOverride {
		Runtime.getRuntime().runFinalization();

		final CountDownLatch fence = new CountDownLatch(1);
		createFinalizationObserver(fence);
		try {
		do {
		Runtime.getRuntime().gc();
		Runtime.getRuntime().runFinalization();
		} while (!fence.await(100, TimeUnit.MILLISECONDS));
		} catch (InterruptedException ex) {
		throw new RuntimeException(ex);
		}
		}

		// Create the observer in the scope of a method to minimize the chance that
		// it remains live in a DEX/machine register at the point of the fence guard.
		// This must be kept to avoid R8 inlining it.
		@Keep
		private static void createFinalizationObserver(CountDownLatch fence) {
		new Object() {
		@Override
		protected void finalize() throws Throwable {
		@@ -196,13 +213,5 @@ public class TestInformationHandler implements ResourceBasedOverride {
		}
		}
		};
		try {
		do {
		Runtime.getRuntime().gc();
		Runtime.getRuntime().runFinalization();
		} while (!fence.await(100, TimeUnit.MILLISECONDS));
		} catch (InterruptedException ex) {
		throw new RuntimeException(ex);
		}
		}
		}